after sitting in the yard a few years its been sold to a happy new owner johnps it may not look like much but it has a zero miles dd 671 turbo a allison ht740 rockwell 54.000 lb rearall rebuilt and more that the new owner is going to use

Must abe some new fangled rear, 54,000 lb ? wonder how that could be, the heaviest single rear I have played was the 23,000 in the MCI7, tag was about 8k I think.Hope someone could splaine this 54,000 rear.Thanksdave

the rear and tag are all on a henderson suspension and the tag says 54.000 lb its from 1957 and its huge the man that bought it will use it, in his 60.000 lb crane and its bigger then what he now has that all i known also when i had it rebuilt all the seals and bearings were special order john

dave wish i had taken a picture of it everyone that saw it over the years said wow thats huge when the rear went to the shop. the other bus/ truck rears to pull the pumkin two guys would pull them out this one they neaded a fork lift. crown allways overbuilt things johnps will ask the new owner to send me a picture

Crown never made a 45-foot bus - their longest tandem school and tour buses, even the legendary high-floor Atomics built for the AEC and the Highway Post Offices, were only 40 feet long. The third photo shows what appears to be a lengthened frame just ahead of the rear axles. (Mid-engine Crowns have very short driveshafts behind their transmission; this one needs a much longer driveshaft than I've ever seen on any Crown.) Why was this done, and what body would then fit on it? The first photo also shows what looks like a normal-length Crown body, i.e. 35 feet long. It would have been a hugely difficult job to separate a Crown frame from its body, because they were welded together as one integral unit in the factory to make them the strongest buses on the road, far stronger than even present-day school buses (I recently looked at a brand-new Amtran pusher at Alliance Bus Lines in Ontario CA, and its body is attached to the frame rails by U-bolts!).

Crown certainly used hefty running gear, but not that hefty! This scan of a brochure from the 1980s shows a 40-foot Crown tandem with a 6-71T, but its rear axles were 23,000 and 22,500 lbs: http://www.flickr.com/photos/23546986@N08/5958960467/#in/photostream/ On my friend's similar Crown tandem with dual-drive axles, they are about the same rating as this brochure's single-drive axles. Late-model Crown tandem school buses had GVWRs in the high-40s, certainly not well over 50,000 lbs! I think earlier Crown tandems had lower GVWRs than the later ones. Is the rear end even from a Crown? You mention it's a Henderson - Crown used Timken axles before using Rockwells, but did they use Henderson before that?

Looks like a 23,000lb drive axle with probably a 22,500lb tag axle behind. That adds up to 45,000lbs-but whichever way you slice it, you're still only allowed 34,000lbs on a tandem setup. Good Luck, TomC

My former 1974 Crown 10-wheeler (VIN 37317) had a tandem rated at 34,000, but that was probably determined by the springs, which were several leaves light from what one sees on a big dump truck. The GVWR was about 47,000, with a front 16K axle. HB of CJ (old coot)

hi john my crown is a 1957 the rear is factory it was 40 ft i streched it to 45 ft the body is welded to plates coming off the frame you can remove body [ not easy ] the 671 turbo motor was built using a 1990 turbo block and turbo setup .

as for the crown you see in first picture its my 1957 crown body now sitting on a modern 1995 frame its also a pusher now with a cummins allision world trans full air ride ect . i had to cut down the 102 "" wide to a 92 " ? will post a few pics. with the roof raised and all the mods. it looks factory stock

Wow! That's adventurous to do all that work. My hat's off to you! I've never heard of anyone turning a pancake into a pusher, or stretching a Crown frame. What frame is the 1957 body now on?

One of the CCJ forum members has ideas of doing major bus surgery to get what he's dreaming about - he's hankering for a hotrod 30-foot shortie Crown with a 400 HP Big-Cam Cummins , so maybe he and you should talk?!

I'm always fascinated to know how people raise Crown roofs, because the bodysides are far from parallel. Did you cut at the roofline, or lower down near the floor level? I thought at first about doing that with my bus, but two seconds later I realized that was not going to happen. To gain extra headroom in the shower I'm thinking of lowering the floor level there by a few inches, not easy but still doable compared to raising the roof.